無法烤麪包經緯度

Question

我正在使用LocationManager和LocationListener爲應用程序提供緯度和經度。在運行應用程序時，出現一個錯誤，提示「Sorry，Process system is not responding。」。這種情況發生在我通過DDMS下的仿真器控制或使用telnet命令提示手動提供lat和long時。

Java代碼：

public class LocationFinder extends Activity { 

private LocationManager locManager; 
private LocationListener locListener; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    locManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); 
    locListener = new MyLocationListener(); 

    locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locListener); 
} 

private class MyLocationListener implements LocationListener{ 

    @Override 
    public void onLocationChanged(Location loc) { 
     // TODO Auto-generated method stub 

     if(loc != null){ 
      Toast.makeText(getBaseContext(), "Latitude: " + loc.getLatitude() + "Longitude: " + loc.getLongitude(), Toast.LENGTH_SHORT).show(); 
     } 
    } 

    @Override 
    public void onProviderDisabled(String provider) { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
     // TODO Auto-generated method stub 
    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 
     // TODO Auto-generated method stub 
    } 

} 

}

我也在模擬器也hw.gps在啓​​用的manifest.xml

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_GPS" /> 
<uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" /> 

以下權限。

我想知道我的代碼是否有問題。 感謝

Answer 1

檢查用你得到的緯度和經度值登錄..

然後在吐司把這個

Toast.makeText(LocationFinder.this, "Latitude: " + loc.getLatitude() + "Longitude: " + loc.getLongitude(), Toast.LENGTH_SHORT).show(); 

代替

Toast.makeText(getBaseContext(), "Latitude: " + loc.getLatitude() + "Longitude: " + loc.getLongitude(), Toast.LENGTH_SHORT).show(); 

Answer 2

// Des: Start Device's GPS and get current latitude and longitude 
    public void GPS() throws IOException { 

// Des: This is a background service and called after every 10 minutes and fetch     latitude-longitude values 
    background = new Thread(new Runnable() { 
    @Override 
    public void run() {    
    for (int i = 0; i < j; i++) { 
     if (ProjectStaticVariable.GPSExit == true) { 
     try { 
      Thread.sleep(600000); //10 minutes 
      mainhandler.sendMessage(mainhandler.obtainMessage()); 
      j++; 
     } 
     catch (Exception e) { 
      e.printStackTrace(); 
      throw new RuntimeException(e); 
     } 
     } 
    } 
    } 
}); 

background.start(); 
mainhandler = new Handler() { 
public void handleMessage(Message msg) { 

// Check Internet status 
    isInternetPresent = cd.isConnectingToInternet(); 
    if (isInternetPresent) { 

     lat_long_Service_flag = true;     
     mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
     mlocListener = new MyLocationListener(getApplicationContext()); 
     mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 0, mlocListener); 

     mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 

    } 
    } 
}; 
} 

// Des: Location Listener through which we get current latitude and longitude 
    public class MyLocationListener implements LocationListener { 

    public MyLocationListener(Context mContext) {} 

    public MyLocationListener(Runnable runnable) {} 

    @Override 
    public void onLocationChanged(Location loc) { 

    longitude = loc.getLongitude(); 
    latitude = loc.getLatitude(); 
    final_latitude = Double.toString(latitude); 
    final_longitude = Double.toString(longitude); 

    } 

    @Override 
    public void onProviderDisabled(String provider) { 
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
    } 

    @Override 
    public void onStatusChanged(String provider, int status, Bundle extras) { 
    } 
    } 

Answer 3

它適合我的作品。

添加1組更多體現的權限：使用許可權的android：NAME =「android.permission.ACCESS_COARSE_LOCATION」

，並嘗試下面的代碼段：

public class GPSTracker implements LocationListener{ 
    private final Context mContext; 
    // flag for GPS status 
    public boolean isGPSEnabled = false; 

    // flag for network status 
    boolean isNetworkEnabled = false; 

    // flag for GPS status 
    boolean canGetLocation = false; 
    Location location; // location 
    double latitude; // latitude 
    double longitude; // longitude 

    // The minimum distance to change Updates in meters 
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 1; // 10 meters 

    // The minimum time between updates in milliseconds 
    private static final long MIN_TIME_BW_UPDATES = 1; // 1 minute 

    // Declaring a Location Manager 
    protected LocationManager locationManager; 
    public GPSTracker(Context context) 
    { 
     this.mContext = context; 
     getLocation(); 
    } 
    /** 
    * Function to get the user's current location 
    * 
    * @return 
    */ 
    public Location getLocation() 
    { 
     try { 
      locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); 

      // getting GPS status 
      isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); 

      Log.v("isGPSEnabled", "=" + isGPSEnabled); 

      // getting network status 
      isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 

      Log.v("isNetworkEnabled", "=" + isNetworkEnabled); 

      if (isGPSEnabled == false && isNetworkEnabled == false) 
      { 
       // no network provider is enabled 
      } else 
      { 
       this.canGetLocation = true; 
       if (isNetworkEnabled) 
       { 
        location=null; 
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
        Log.d("Network", "Network"); 
        if (locationManager != null) 
        { 
         location = locationManager 
           .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
         if (location != null) 
         { 
          latitude = location.getLatitude(); 
          longitude = location.getLongitude(); 
         } 
        } 
       } 
       // if GPS Enabled get lat/long using GPS Services 
       if (isGPSEnabled) 
       { 
        location=null; 
        if (location == null) 
        { 
         locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
         Log.d("GPS Enabled", "GPS Enabled"); 
         if (locationManager != null) 
         { 
          location = locationManager 
            .getLastKnownLocation(LocationManager.GPS_PROVIDER); 
          if (location != null) 
          { 
           latitude = location.getLatitude(); 
           longitude = location.getLongitude(); 
          } 
         } 
        } 
       } 
      } 

     } catch (Exception e) 
     { 
      e.printStackTrace(); 
     } 

     return location; 
    } 

    /** 
    * Stop using GPS listener Calling this function will stop using GPS in your 
    * app 
    * */ 
    public void stopUsingGPS() 
    { 
     if (locationManager != null) 
     { 
      locationManager.removeUpdates(GPSTracker.this); 
     } 
    } 

    /** 
    * Function to get latitude 
    * */ 
    public double getLatitude() 
    { 
     if (location != null) 
     { 
      latitude = location.getLatitude(); 
     } 

     // return latitude 
     return latitude; 
    } 

    /** 
    * Function to get longitude 
    * */ 
    public double getLongitude() 
    { 
     if (location != null) 
     { 
      longitude = location.getLongitude(); 
     } 

     // return longitude 
     return longitude; 
    } 

    /** 
    * Function to check GPS/wifi enabled 
    * 
    * @return boolean 
    * */ 
    public boolean canGetLocation() 
    { 
     return this.canGetLocation; 
    } 

    /** 
    * Function to show settings alert dialog On pressing Settings button will 
    * lauch Settings Options 
    * */ 
    public void showSettingsAlert() 
    { 
     AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext); 

     // Setting Dialog Title 
     alertDialog.setTitle("GPS is settings"); 

     // Setting Dialog Message 
     alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?"); 

     // On pressing Settings button 
     alertDialog.setPositiveButton("Settings",new DialogInterface.OnClickListener() 
     { 
        public void onClick(DialogInterface dialog, int which) 
        { 
         Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
         mContext.startActivity(intent); 
        } 
       }); 

     // on pressing cancel button 
     alertDialog.setNegativeButton("Cancel",new DialogInterface.OnClickListener() 
     { 
        public void onClick(DialogInterface dialog, int which) 
        { 
         dialog.cancel(); 
        } 
       }); 

     // Showing Alert Message 
     alertDialog.show(); 
    } 
    @Override 
    public void onLocationChanged(Location arg0) 
    { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onProviderDisabled(String arg0) 
    { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onProviderEnabled(String arg0) 
    { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void onStatusChanged(String arg0, int arg1, Bundle arg2) 
    { 
     // TODO Auto-generated method stub 

    }